<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    
</body>
<script>
    var dog={
        dogName:"lily",
        weight:"20kg",
        color:"black",
        age:2,
        jump:function(){
            if(this.age>=2){
                console.log(this.dogName+"can jump");
            }
           
        }
}
/*
定义一个cat对象 属性有 名字 品种 体重
*/
</script>
</html>